Reaching a Starship cost of $5 million would require 3000 employees to build about 300 Starship every year. This would be $1.3 million in labor, $2.4 million in material and $1.3 million for other costs. A typical Boeing 737 costs about $100 million. A jumbo 787 costs about $300-400 million. The World currently has about 35,000 commercial passenger aircraft and this was projected to rise to 50,000 in 2040. At an average cost of $100 million the passenger air fleet in 2040 would have a capital cost of $5 trillion. A mature SpaceX Starship operation would have a cost of $5 million per Starship. This means if all commercial passenger plane industry asset base was converted and replaced with Starships then there would be one million Starships.